A severe bow echo raced from west to east across Roosevelt County and caused extensive damage from Poplar to Culbertson between 8 and 9 pm.  The National Weather Service performed a storm survey of the damage the following day.  As the storm moved through Poplar two hangers were blown off at the airport.   As the storm proceeded east through Brockton 9 cars of a freight train were blown off the tracks approximately 1 mile east of town.  The wind was estimated at 113 mph based off of the Fujita damage scale.  There was significant damage to the grain elevator in Brockton which lost the top several feet of the structure, and was slightly shifted off of its base.  The entire elevator will be rebuilt.   At least 25 homes and businesses in Brockton suffered roof and siding damage. At least 9 large grain bins north of town were blown across the highway and destroyed.  Nearly every tree that were over 25 feet tall between Poplar and Brockton was damaged, and all homes had some sort of damage, mainly to roofing shingles.  Some intermittent crop damage was observed.   A grain bin was blown into the grain elevator in Sprole.   Several homes in the Fort Kipp and Brockton area had significant roof damage, with it the plywood being blown off.   Many other homes had shingle damage.  As the storm continued east into the town of Culbertson it produced significant damage throughout the town.  Nearly every tree in town had either significant damage or was destroyed, including many trees that had been in town since it was established.   There were many homes with shingle damage or siding peeled off.  One home had an entire roof loss and the garage was destroyed.  65 to 70 percent of the roads were blocked with debris after the storm passed.   At the school in town the scoreboard and public address systems were destoyed, and the fence was completely flattened.  As the storm moved through the town of Froid there was significant tree damage and some grain bins were blown over.  There was significant crop damage with crops blown down.  The grain elevator in Froid had some metal siding peeled off, and it also shifted slightly.  There was a 107 mph measured wind gust 6 miles to the east-northeast of Froid.   It is estimated that this storm caused between 4 and 5 million dollars of damage across Roosevelt County.

Thunderstorm Wind in ROOSEVELT, MONTANA
From 13-JUL-05 19:50:00 to 13-JUL-05 20:10:00 (MST)
Location: BROCKTON
Magnitude: 70 EG
Reported by: GENERAL PUBLIC

The strong wind lasted for about 20 minutes.   See the event narrative below.

Thunderstorm Wind in ROOSEVELT, MONTANA
From 13-JUL-05 20:40:00 to 13-JUL-05 20:50:00 (MST)
Location: WOLF PT
Magnitude: 52 EG
Reported by: TRAINED SPOTTER

Thunderstorm Wind in RICHLAND, MONTANA
From 13-JUL-05 20:21:00 to 13-JUL-05 20:21:00 (MST)
Location: ENID
Magnitude: 61 EG
Reported by: TRAINED SPOTTER

Thunderstorm Wind in SHERIDAN, MONTANA
From 13-JUL-05 20:42:00 to 13-JUL-05 20:42:00 (MST)
Location: RESERVE
Magnitude: 52 EG
Property damage: 10K
Reported by: LAW ENFORCEMENT

A semi-truck hit a fallen tree on Highway 258.  The driver of the truck was injured, but refused medical attention.

Thunderstorm Wind in VALLEY, MONTANA
From 13-JUL-05 19:50:00 to 13-JUL-05 19:50:00 (MST)
Location: GLASGOW
Magnitude: 52 EG
Reported by: TRAINED SPOTTER

Thunderstorm Wind in ROOSEVELT, MONTANA
From 13-JUL-05 19:10:00 to 13-JUL-05 19:10:00 (MST)
Location: POPLAR ARPT
Magnitude: 70 EG
Property damage: 30K
Reported by: AIRPLANE PILOT

See the event narrative below.

Thunderstorm Wind in ROOSEVELT, MONTANA
From 13-JUL-05 20:01:00 to 13-JUL-05 20:01:00 (MST)
Location: MC CABE
Magnitude: 59 MG
Reported by: TRAINED SPOTTER

Thunderstorm Wind in ROOSEVELT, MONTANA
From 13-JUL-05 20:01:00 to 13-JUL-05 20:01:00 (MST)
Location: FROID
Magnitude: 70 EG
Reported by: GENERAL PUBLIC

Numerous trees down.

Thunderstorm Wind in SHERIDAN, MONTANA
From 13-JUL-05 20:01:00 to 13-JUL-05 20:01:00 (MST)
Location: MEDICINE LAKE
Magnitude: 93 MG
Reported by: TRAINED SPOTTER

Thunderstorm Wind in ROOSEVELT, MONTANA
From 13-JUL-05 20:02:00 to 13-JUL-05 20:02:00 (MST)
Location: FROID
Magnitude: 61 EG
Reported by: TRAINED SPOTTER

Hail in DAWSON, MONTANA
From 13-JUL-05 20:55:00 to 13-JUL-05 20:55:00 (MST)
Location: LINDSAY
Magnitude: 0.75 
Reported by: TRAINED SPOTTER

Thunderstorm Wind in VALLEY, MONTANA
From 13-JUL-05 19:58:00 to 13-JUL-05 19:58:00 (MST)
Location: FT PECK
Magnitude: 57 MG
Reported by: LAW ENFORCEMENT

Thunderstorm Wind in DANIELS, MONTANA
From 13-JUL-05 20:45:00 to 13-JUL-05 20:45:00 (MST)
Location: SCOBEY
Magnitude: 70 MG
Reported by: TRAINED SPOTTER

Thunderstorm Wind in RICHLAND, MONTANA
From 13-JUL-05 21:05:00 to 13-JUL-05 21:05:00 (MST)
Location: SIDNEY
Magnitude: 54 MG
Reported by: GENERAL PUBLIC

Thunderstorm Wind in RICHLAND, MONTANA
From 13-JUL-05 21:00:00 to 13-JUL-05 21:00:00 (MST)
Location: (SDY)SIDNEY-RICHLAND
Magnitude: 52 EG
Reported by: TRAINED SPOTTER

Thunderstorm Wind in DAWSON, MONTANA
From 13-JUL-05 21:25:00 to 13-JUL-05 21:25:00 (MST)
Location: BLOOMFIELD
Magnitude: 52 EG
Reported by: TRAINED SPOTTER

Hail in DAWSON, MONTANA
From 13-JUL-05 21:30:00 to 13-JUL-05 21:30:00 (MST)
Location: BLOOMFIELD
Magnitude: 0.75 
Reported by: GENERAL PUBLIC

Thunderstorm Wind in WIBAUX, MONTANA
From 13-JUL-05 22:00:00 to 13-JUL-05 22:00:00 (MST)
Location: WIBAUX
Magnitude: 61 EG
Reported by: GENERAL PUBLIC

A row of trees were blown down.  A trailer was turned over with damage.  Out building damage included loss of entire roof and destruction of wood frame.

Thunderstorm Wind in PETROLEUM, MONTANA
From 13-JUL-05 18:45:00 to 13-JUL-05 18:45:00 (MST)
Location: DRY BLOOD CREEK
Magnitude: 77 MG
Reported by: AWOS,ASOS,MESONET,ETC

Thunderstorm Wind in PHILLIPS, MONTANA
From 13-JUL-05 19:07:00 to 13-JUL-05 19:07:00 (MST)
Location: FOURCHETTE
Magnitude: 52 EG
Reported by: OTHER FEDERAL AGENCY

The wind gust was reported at the Brandon Coulee Wildfire which is in the UL Bend area.

Thunderstorm Wind in DANIELS, MONTANA
From 13-JUL-05 21:05:00 to 13-JUL-05 21:05:00 (MST)
Location: FOUR BUTTES
Magnitude: 70 EG
Property damage: 29K
Reported by: NEWSPAPER

A 15,000 bushel steel grain bin at the Four Buttes Farmer's Elevator was completely destroyed.

Thunderstorm Wind in ROOSEVELT, MONTANA
From 13-JUL-05 19:10:00 to 13-JUL-05 19:10:00 (MST)
Location: POPLAR
Magnitude: 80 EG
Property damage: 100K
Reported by: NWS STORM SURVEY

See event narrative below.

Thunderstorm Wind in ROOSEVELT, MONTANA
From 13-JUL-05 19:20:00 to 13-JUL-05 19:20:00 (MST)
Location: POPLAR
Magnitude: 75 MG
Reported by: AWOS,ASOS,MESONET,ETC

Thunderstorm Wind in ROOSEVELT, MONTANA
From 13-JUL-05 19:30:00 to 13-JUL-05 19:30:00 (MST)
Location: FT KIPP
Magnitude: 80 EG
Reported by: TRAINED SPOTTER

See event narrative below.

Thunderstorm Wind in ROOSEVELT, MONTANA
From 13-JUL-05 19:50:00 to 13-JUL-05 19:50:00 (MST)
Location: BROCKTON
Magnitude: 75 EG
Reported by: TRAINED SPOTTER

See the event narrative below.

Thunderstorm Wind in ROOSEVELT, MONTANA
From 13-JUL-05 20:05:00 to 13-JUL-05 20:05:00 (MST)
Location: FROID
Magnitude: 61 EG
Property damage: 250K
Crop damage: 100K
Reported by: NEWSPAPER

There was significant tree damage in the town of Froid.  Some grain bins were blown over, and there was significant crop damage with crops blown down.  The grain elevator in town had some metal siding peeled off and it also shifted slightly.

Thunderstorm Wind in ROOSEVELT, MONTANA
From 13-JUL-05 19:50:00 to 13-JUL-05 19:50:00 (MST)
Location: BROCKTON
Magnitude: 75 EG
Reported by: GOVT OFFICIAL

The west side of the roof of a home was destroyed.

Thunderstorm Wind in ROOSEVELT, MONTANA
From 13-JUL-05 19:48:00 to 13-JUL-05 19:48:00 (MST)
Location: CULBERTSON
Magnitude: 80 EG
Property damage: 3M
Reported by: GENERAL PUBLIC

Widespread and significant damage throughout the town of Culbertson.  See the event narrative below.

Hail in MCCONE, MONTANA
From 13-JUL-05 18:40:00 to 13-JUL-05 18:40:00 (MST)
Location: WELDON
Magnitude: 0.75 
Reported by: TRAINED SPOTTER

Hail in MCCONE, MONTANA
From 13-JUL-05 18:40:00 to 13-JUL-05 18:40:00 (MST)
Location: CIRCLE
Magnitude: 0.75 
Reported by: EMERGENCY MANAGER

Thunderstorm Wind in MCCONE, MONTANA
From 13-JUL-05 18:40:00 to 13-JUL-05 18:40:00 (MST)
Location: CIRCLE
Magnitude: 52 EG
Reported by: EMERGENCY MANAGER

Thunderstorm Wind in MCCONE, MONTANA
From 13-JUL-05 18:55:00 to 13-JUL-05 18:55:00 (MST)
Location: CIRCLE
Magnitude: 81 MG
Reported by: GENERAL PUBLIC

Thunderstorm Wind in VALLEY, MONTANA
From 13-JUL-05 19:15:00 to 13-JUL-05 19:15:00 (MST)
Location: GLASGOW
Magnitude: 81 MG
Reported by: AWOS,ASOS,MESONET,ETC

Thunderstorm Wind in ROOSEVELT, MONTANA
From 13-JUL-05 19:15:00 to 13-JUL-05 19:15:00 (MST)
Location: BROCKTON
Magnitude: 98 EG
Property damage: 1.25M
Reported by: LAW ENFORCEMENT

14 cars of a freight train were blown off the tracks approximately 1 mile east of Brockton.  See the event narrative below.

Thunderstorm Wind in VALLEY, MONTANA
From 13-JUL-05 19:20:00 to 13-JUL-05 19:20:00 (MST)
Location: HINSDALE
Magnitude: 52 EG
Reported by: TRAINED SPOTTER

Thunderstorm Wind in VALLEY, MONTANA
From 13-JUL-05 19:48:00 to 13-JUL-05 19:48:00 (MST)
Location: GLASGOW
Magnitude: 59 MG
Property damage: 10K
Reported by: AWOS,ASOS,MESONET,ETC

Some roofs west of town with shingle damage and large tree limbs down.

Thunderstorm Wind in RICHLAND, MONTANA
From 13-JUL-05 19:30:00 to 13-JUL-05 19:30:00 (MST)
Location: LAMBERT
Magnitude: 61 EG
Reported by: TRAINED SPOTTER

Thunderstorm Wind in VALLEY, MONTANA
From 13-JUL-05 19:35:00 to 13-JUL-05 19:35:00 (MST)
Location: DUCK CREEK
Magnitude: 52 EG
Reported by: TRAINED SPOTTER

Thunderstorm Wind in VALLEY, MONTANA
From 13-JUL-05 19:45:00 to 13-JUL-05 19:45:00 (MST)
Location: GLASGOW
Magnitude: 60 EG
Reported by: NWS EMPLOYEE(OFF DUTY)

Tops of three 20 inch diameter trees were blown over.  Numerous branches down.